/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/MeshQueryFunctions.h
For the specified TriangleID of the TargetMesh, get the Vertex Colors at each vertex of the Triangle. These Colors will be taken from the Vertex Color Attribute, ie they will potentially be split-colors.
static [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * GetTriangleVertexColors ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh, int32 TriangleID, [FLinearColor](API\Runtime\Core\Math\FLinearColor) & Color1, [FLinearColor](API\Runtime\Core\Math\FLinearColor) & Color2, [FLinearColor](API\Runtime\Core\Math\FLinearColor) & Color3, bool & bTriHasValidVertexColors )